CN202790459U - Integrated four-wheel drive tractor gearbox - Google Patents
Integrated four-wheel drive tractor gearbox Download PDFInfo
- Publication number
- CN202790459U CN202790459U CN 201220373290 CN201220373290U CN202790459U CN 202790459 U CN202790459 U CN 202790459U CN 201220373290 CN201220373290 CN 201220373290 CN 201220373290 U CN201220373290 U CN 201220373290U CN 202790459 U CN202790459 U CN 202790459U
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- gear
- wheel drive
- sliding
- fixed
- fixed gear
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Abstract
An integrated four-wheel drive tractor gearbox comprises a box body, a variable speed gear set, a reversing gear set and shifting forks corresponding to sliding gears in the variable speed gear set and the steering gear set are arranged in the box body, a bevel gear shaft and a power output shaft are further arranged in the box body and are connected with the reversing gear set through a transmission gear respectively, and a bevel gear disposed on the bevel gear shaft is connected with a differential mechanism. The integrated four-wheel drive tractor gearbox has the advantages that the variable speed gear set, the reversing gear set, the shifting forks, the power output shaft, the bevel gear shaft, the bevel gear and the differential mechanism are integrated in the box body, each gear set in the box body is reasonably distributed, the reversing gear set is respectively connected with the bevel gear shaft and the power output shaft, the bevel gear of the bevel gear shaft is connected with the differential mechanism, and the parts do not interfere with one another. The inside gear sets are compact in distribution, size of the gearbox is reduced, an articulated steering four-wheel drive tractor with the integrated four-wheel drive tractor gearbox is flexible in steering, small in steering resistance and convenient to operate.
Description
Technical field
The utility model relates to a kind of farm machinery, particularly a kind of integrated type four-wheel drive tractor gearbox.
Background technique
Four-wheel drive tractor can improve grounding performance and the driveability of vehicle.Existing four-wheel tractor drive system is comprised of power source (diesel engine or petrol engine), gearbox, transfer case, differential mechanism, terminal assembly, propons, back axle.Wherein, gearbox is comprised of gear teeth wheels, commutating tooth wheels, relies on shift fork to stir sliding gear in each gear train, by sliding gear and different gear engagement, change velocity ratio and transmission direction.After the direction of the moment of torsion that power source produces, size change through gearbox, via the pto＝power take-off output of gearbox, after transfer case is with the moment of torsion shunting, carry to the differential mechanism corresponding with forward and backward bridge and terminal assembly respectively.Gearbox, transfer case, with differential mechanism independent installation the respectively, gearbox internal tooth wheels are arranged loose, the gearbox volume is huge.
Articulated steering is a kind of new form that turns to, and it turns to flexibly, and radius of turn is little.But because the turning point of articulated steering is positioned at the middle part of vehicle, place the bulky gearbox of four-wheel tractor front portion can affect the flexibility of tractor steering, the resistance when turning to is large, is not easy to handle.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of integrated type four-wheel drive tractor gearbox, and its volume is little, and the inner gear train compactness of arranging can guarantee that the articulated steering four-wheel drive tractor turns to flexibly, and resistance is little when turning to, and is convenient to manipulation.
The utility model is achieved in that
A kind of integrated type four-wheel drive tractor gearbox, comprise casing, in casing, be provided with gear teeth wheels, commutating tooth wheels, with the shift fork that sliding gear is corresponding in gear teeth wheels, the commutating tooth wheels, its special way is: also be provided with bevel gear shaft, pto＝power take-off in casing, bevel gear shaft, pto＝power take-off are connected to realize dynamic branch by driving gear with the commutating tooth wheels respectively, place the bevel gear on the described bevel gear shaft to be connected with differential mechanism.
The bevel gear of described bevel gear shaft is positioned at the front portion of bevel gear shaft.
Described gear teeth wheels by power input shaft, with power input shaft affixed or the first fixed gear of being integrated, one axle, place the first sliding gear, the second sliding gear on the axle successively, two axles, place the second fixed gear on two axles, the 3rd fixed gear, the 4th fixed gear to form successively, described commutating tooth wheels are by the 3rd sliding gear that places on the axle, place the 5th fixed gear on two axles, three axles, place the 6th fixed gear on three axles to form.
Described bevel gear shaft is provided with the 7th fixed gear, described the 7th fixed gear and the engagement of the 5th fixed gear.
Described the 5th fixed gear is connected with the output shaft engaging sleeve, and described output shaft engaging sleeve is connected with pto＝power take-off.
A described axle by bearing bracket stand be located at the first affixed fixed gear of power input shaft on, described two axles are located on the pto＝power take-off by bearing bracket stand.
Described the first sliding gear, the second sliding gear, the 3rd sliding gear, the first fixed gear, the 3rd fixed gear, the 4th fixed gear, the 6th fixed gear are duplicate gear, and described the 5th fixed gear is triple gear.
Be respectively equipped with groove on described the first sliding gear, the second sliding gear, the 3rd sliding gear, the output shaft engaging sleeve.
Described shift fork is two, the groove position of one of them corresponding first sliding gear, the second sliding gear, the 3rd sliding gear, the groove position of another corresponding output shaft engaging sleeve.
The beneficial effects of the utility model are:
Gear teeth wheels, commutating tooth wheels, shift fork, pto＝power take-off, bevel gear shaft, bevel gear and differential mechanism are integrated in the casing, by each gear train in the reasonable Arrangement casing, the tumbler gear group is connected with respectively bevel gear shaft, pto＝power take-off, and the bevel gear of bevel gear shaft links to each other with differential mechanism, mutual noninterference between the each several part.The inner gear train compactness of arranging has reduced the gearbox volume, guarantees that the articulated steering four-wheel drive tractor that this integrated type four-wheel drive tractor gearbox is housed turns to flexibly, and resistance is little when turning to, and is convenient to manipulation.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the mesh schematic representation of the 5th fixed gear and the 6th fixed gear in the commutating tooth wheels of Fig. 1;
Fig. 3 is bevel gear and differential mechanism mesh schematic representation among Fig. 1.
Among the figure: casing 1, power input shaft 2, the first fixed gears 3, one axles 4, the first sliding gear 5, the second sliding gears 6, gear shift fork 7, the three sliding gears 8, two axles, 9, the second fixed gears, 10, the three fixed gears, 11, the four fixed gears 12, three axles, 13, the six fixed gears, 14, the five fixed gears 15, output shaft engaging sleeve 16, cut-off shift fork 17, pto＝power take-off 18, groove 19, differential mechanism 20, bevel gear 21, the seven fixed gears 22, bevel gear shaft 23.
Embodiment
As shown in the figure, this integrated type four-wheel drive tractor gearbox comprises casing 1, is provided with gear teeth wheels, commutating tooth wheels in casing 1.Described gear teeth wheels are by power input shaft 2, or first fixed gear 3 that be integrated affixed with power input shaft 2, one axle 4, place successively the first sliding gear 5, the second sliding gear 6 on the axle 4 from right to left, two axles 9, place successively the second fixed gear 10 on two axles 9, the 3rd fixed gear 11, the 4th fixed gear 12 to form from right to left, described the first fixed gear 3 is integrated with power input shaft 2 in the present embodiment.Described commutating tooth wheels are by the 3rd sliding gear 8 that places on the axle 4, place the 5th fixed gear 15, three axles 13 on two axles 9, place the 6th fixed gear 14 on three axles 13 to form.Described the first sliding gear 5, the second sliding gear 6, the 3rd sliding gear 8, the first fixed gear 3, the 3rd fixed gear 11, the 4th fixed gear 12, the 6th fixed gear 14 are duplicate gear, and described the 5th fixed gear 15 is triple gear.Described the 5th fixed gear 15 is connected with output shaft engaging sleeve 16, and described output shaft engaging sleeve 16 is connected with pto＝power take-off 18.Described power input shaft 2, pto＝power take-off 18 are located on the casing 1 by bearing bracket stand respectively, a described axle 4 one ends by bearing bracket stand be located at the first affixed fixed gear 3 of power input shaft 2 in, the other end is erected on the casing 1, described pto＝power take-off 18 is divided into two sections, one section is the axle shape, and one section is shell-like, and described two axles, 9 one ends are located in the pto＝power take-off 18 shell-like sections by bearing bracket stand, the other end is erected on the casing 1, and the two ends of described three axles 13 are located on the casing 1 by bearing bracket stand respectively.Described tumbler gear group is connected with respectively bevel gear shaft 23, pto＝power take-off 18: described bevel gear shaft 23 is provided with the 7th fixed gear 22, described the 7th fixed gear 22 and 15 engagements of the 5th fixed gear.Bevel gear 21 on the described bevel gear shaft 23 is positioned at the anterior of bevel gear shaft 23 and links to each other with differential mechanism 20.In casing 1, be provided with two shift forks, be respectively gear shift fork 7 and cut-off shift fork 17, wherein gear shift fork 7 has six gears, be respectively equipped with groove 19 on described the first sliding gear 5, the second sliding gear 6, the 3rd sliding gear 8, six gears of gear shift fork 7 are corresponding with the extreme limit of travel position of above-mentioned three sliding gears respectively; Cut-off shift fork 17 and be provided with two gears, output shaft engaging sleeve 16 is provided with groove 19, and two gears that cut-off shift fork 17 are corresponding with the limit position of output shaft engaging sleeve 16 strokes.
During use, by stirring gear shift fork 7, change velocity ratio, transmission direction, cut-off shift fork 17 by stirring, change drive form.
Specifically, stir 7 to one grades of gear shift forks, the first sliding gear 5 moves to right, and power directly transmits by the first fixed gear 3, the first sliding gear 5; Stir gear shift fork 7 to second gear, the first sliding gear 5 moves to left, and power transmits by the first fixed gear 3, the second fixed gear 10, the 3rd fixed gear 11, the first sliding gear 5; Stir gear shift fork 7 to third gear, the second sliding gear 6 moves to right, and power transmits by the first fixed gear 3, the second fixed gear 10, the 3rd fixed gear 11, the second sliding gear 6; Stir gear shift fork 7 to fourth speed, the second sliding gear 6 moves to left, and power transmits by the first fixed gear 3, the second fixed gear 10, the 4th fixed gear 12, the second sliding gear 6; Stir gear shift fork 7 to reverse gear, power transmits by the 3rd sliding gear 8, the 6th fixed gear 14, the 5th fixed gear 15; When shift fork was positioned at other position, power transmitted by the 3rd sliding gear 8, the 5th fixed gear 15.
When needing four-wheel drive, stir and cut-off shift fork 17, output shaft engaging sleeve 16 connects the 5th fixed gear 15 and pto＝power take-off 18, with transmission of power to tractor rear wheel, when needs two wheel drive, to stir and cut-off shift fork 17, output shaft engaging sleeve 16 separates with the 5th fixed gear 15.
Claims (9)
1. integrated type four-wheel drive tractor gearbox, comprise casing, in casing, be provided with gear teeth wheels, commutating tooth wheels, with the shift fork that sliding gear is corresponding in gear teeth wheels, the commutating tooth wheels, it is characterized in that: in casing, also be provided with bevel gear shaft, pto＝power take-off, bevel gear shaft, pto＝power take-off are connected to realize dynamic branch by driving gear with the commutating tooth wheels respectively, place the bevel gear on the described bevel gear shaft to be connected with differential mechanism.
2. integrated type four-wheel drive tractor gearbox according to claim 1, it is characterized in that: the bevel gear of described bevel gear shaft is positioned at the front portion of bevel gear shaft.
3. integrated type four-wheel drive tractor gearbox according to claim 1, it is characterized in that: described gear teeth wheels by power input shaft, with power input shaft affixed or the first fixed gear of being integrated, one axle, place the first sliding gear, the second sliding gear on the axle successively, two axles, place the second fixed gear on two axles, the 3rd fixed gear, the 4th fixed gear to form successively, described commutating tooth wheels are by the 3rd sliding gear that places on the axle, place the 5th fixed gear on two axles, three axles, place the 6th fixed gear on three axles to form.
4. integrated type four-wheel drive tractor gearbox according to claim 3, it is characterized in that: described bevel gear shaft is provided with the 7th fixed gear, described the 7th fixed gear and the engagement of the 5th fixed gear.
5. integrated type four-wheel drive tractor gearbox according to claim 3, it is characterized in that: described the 5th fixed gear is connected with the output shaft engaging sleeve, and described output shaft engaging sleeve is connected with pto＝power take-off.
6. integrated type four-wheel drive tractor gearbox according to claim 3, it is characterized in that: a described axle is located on the power input shaft by bearing bracket stand, and described two axles are located on the pto＝power take-off by bearing bracket stand.
7. integrated type four-wheel drive tractor gearbox according to claim 3, it is characterized in that: described the first sliding gear, the second sliding gear, the 3rd sliding gear, the first fixed gear, the 3rd fixed gear, the 4th fixed gear, the 6th fixed gear are duplicate gear, and described the 5th fixed gear is triple gear.
8. integrated type four-wheel drive tractor gearbox according to claim 3 is characterized in that: be respectively equipped with groove on described the first sliding gear, the second sliding gear, the 3rd sliding gear, the output shaft engaging sleeve.
9. integrated type four-wheel drive tractor gearbox according to claim 3, it is characterized in that: described shift fork is two, the groove position of one of them corresponding first sliding gear, the second sliding gear, the 3rd sliding gear, the groove position of another corresponding output shaft engaging sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220373290 CN202790459U (en) | 2012-07-31 | 2012-07-31 | Integrated four-wheel drive tractor gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220373290 CN202790459U (en) | 2012-07-31 | 2012-07-31 | Integrated four-wheel drive tractor gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202790459U true CN202790459U (en) | 2013-03-13 |
Family
ID=47817724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220373290 Expired - Fee Related CN202790459U (en) | 2012-07-31 | 2012-07-31 | Integrated four-wheel drive tractor gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202790459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363068A (en) * | 2013-06-28 | 2013-10-23 | 李承昌 | Synchronous gearbox of four-wheel drive tractor |
-
2012
- 2012-07-31 CN CN 201220373290 patent/CN202790459U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363068A (en) * | 2013-06-28 | 2013-10-23 | 李承昌 | Synchronous gearbox of four-wheel drive tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20140731 |
|
| EXPY | Termination of patent right or utility model |